ML19338E214
| ML19338E214 | |
| Person / Time | |
|---|---|
| Site: | Zimmer |
| Issue date: | 09/10/1980 |
| From: | Tedesco R Office of Nuclear Reactor Regulation |
| To: | Borgman E CINCINNATI GAS & ELECTRIC CO. |
| References | |
| NUDOCS 8009250146 | |
| Download: ML19338E214 (4) | |
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UNITED STATES g.' g y. g NUCLEAR REGULATORY COMMISSION y
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Docket No. 50-368 Mr. Earl A. Borgmann Vice President - Engineering Cincinnati Gas & Electric Company P. O. Box 960 Cincinnati, Ohio 45201
Dear Mr. Borgmann:
SUBJECT:
REQUEST FOR TURBINE DISC INFORMATION Before the staff can complete its review of your inservice inspection program, it needs additional information on the Zinmer LP turbine disc. The information requested is described in the enclosure to this letter.
Please advise us when the information will be provided.
Sincerely,
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M Robert L. Tedesco Assistant Director for Licensing Division of Licensing
Enclosure:
As stated cc w/ enclosure:
See next page S
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gy Mr. Earl A. Borgmann Vice President - Engineering Cincinnati Gas & Electric Company P. O. Box 960 C1ncinnati, Ohi,o 43201
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cc: Troy B. Conner, Jr., Esq.
Dr. Frank F. Hooper Conner, Moore a'Corber School of Natural Resources
-1747 Pennsylvania Avenue, N. W.
University of Michigan Washington, D. C.
20006 Ann Arbor, Michigan 48109 Mr. William J. Morar General Counsel g
Charles Bechhoefer, Esq., Chairman Cincinnati Gas & Electric Company Atonic Safety & Licensing Board Panel P. O. Box 960 U. S. Nuclear Regulatory Commission Washington, D. C.
20555 Cincinnati, Ohio 45201 Mr. William G. Porter, Jr.
Mr. Glenn 0. Bright Porter, Stanley, Arthur Atomic Safety & Licensing Board ?anel and Platt U. S. Nuclear Regulatory Commission 37 West Broad Street Washington, D. C.
20555 Columbus, Ohio 43215 Leah S. Kosik, Esq.
3454 Cornell Place Mr. Steven G. Smith, Manager Cincinnati, Ohio 45220 Engineering & Project Control Dayton Power & Light Company P. O. Box 1247 W. Peter Heile, Esq.
Assistant City Solicitor Dayton, Ohio 45401 Room 214, City Hall J. Robert Newlin, Counsel Cincinnati, Ohio 45220 Dayton Power & Light Company Timothy S. Hogan, Jr., Chairman P. O. Box 1247 BoaN of Commissioners Dayton, Ohio 45401 50 Market Street Mr. James D. Flynn, Manager Clermont County datavia, Ohio 45103 Licensing Environmental Affairs Cincinnati Gas &- Electric Company John D. Woliver, Esq.
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P. O. Box 960 Clermont County Community Council Cincinnati, Ohio 45201 Box 181
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Batavia, Ohio 45103 Mr. J. P. Fenstermaker
-Senior Vice President-Operations Mrs. Mary Reder Columbus & Southern Ohio Box 270, Rt. 2 Electric Company 215 North Front Street California, Kentucky 41007 g
Columbus, Ohio 43215 Oale D. Brodkey 3
David Martin, Esq.
Assistant Attorney General l
Office of the Attorr.ey General,
Division of Environmental Law 209 St. Clair Street Office of Attorney General E
First Floor
?O9 St. Clair Street Frankfort, Kentucky 40601 i
Frankfort, Kentucky 40601 j
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kb Mr. Earl A. Borgmann Andrew B. Dennison, Esq.
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200 Main Street Bataviay Ohio 45103 Robert A. Jones, Esq.
Prosecuting Attorney of Clermont County, Chio 154 Main Street Batavia, Ohio 45103 Resident Inspector /Zimmer
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U. S. Nuclear Regulatory Commission P. O. Box 58 New Richmond, Ohio 45157
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ENCLOSURE REQUEST FOR INFORMATION RELATED TO TURBINE DISCS I.
Provide the following information for each LP turbine:
A.
Turbine type S.
For each disc:
1.
type of material including material specifications 2.
tensile properties data 3.
toughness properties data including Fracture Appearance Transition Temperature and upper energy and temperature 4.
keyway temperatures 5.
critical crack size at operating and design overspeed 6.
crack growth rate 7.
calculated bore end keyway stress at operating and design overspeed 8.
calculated K data ic 9.
minimum yield strength specified for each disc II.
Provide details of the results of any completed preservice inspection of LP turbine rotors.
For each indication aetected, provide details of the location of th6 crack, its orientation, and size.
III. Indicate discs that will have sufficient moisture in the hub to cause a propensity for stress corrosion cracking.
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